Improvement in sash-holders



UNITED STATES .LITENT QFFIGE.

ELIJAH KNAPI, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT IN SASH-HOLDERS.

Specification forming part of Letters Patent No. 138,25S, dated April29, 1873; application tiled December 14, 1872.

tion of the same, reference being had to the accompanying drawing makinga part of this specification, in which Figure 1 is a front elevation ofa windowsash having Iny improvement. Fig. 2 represents a plan with jambbroken away. Fig. 3 is a longitudinal section taken through c b,

Fig. 2.

To avoid the slipping or sliding of the window when it is raised orlowered, and in the position desired without marring the sashes, andexclude the wind and dust are the object and purpose of my invention. Myinvention consists in the use of a thin piece of `metal attached to theinner face of the sash" at eachV side of the window, the outer endextending sufficiently far to be covered by the windowjamb. The plate isheld by two small screws, and a screw is placed underneath it centrallyto be-operated upon through an opening, which raises or depresses theplate, causing it to act in the capacity of a spring against the jamb,as will hereinafter more fully appear.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the draw- Ing.

A represents a plate of steel or other metal, which is rigidly securedto one side of the window-sash frame D by one or more screws, C. Theplate extends outwardly between the sash and jamb or casin g of thewindow. A screw,

B, with rounded head is made to enter the sash underneath the plateabout midway, which acts as a fulcrum and imparts more or less tensionand spring to the plate by loosening or turning up the screw, which isaccomplished through a hole or opening made in the plate of less sizethan that of the screw-head.

By this device it will be clearly understood that a lever of the firstkind is had where the screw B is the fulcrum, the screws C C are theresistance, and the jamb or casing the power, and the plate acting as aspring to keep the upper and lower sash in close contact with each otherand aga-inst the outer casing, thus retaining the sash in positionV aswell as preventing rattling and the wind and dust from entering theapartment, which is of so common anoccurrence where the sash issuspended by cords and weights or other devices.

I am aware of the patent of W. E. Sweet, October 17,1871, and do notclaim the construction therein shown.

Having thus described my invention, what I claim, and desire to secureby Letters Pat ent, is-

The thin plate A attached to the inner face ofthe sash, secured byscrews or their equivalents at one end, and adjustable against the jambby means of a screw placed beneath its central portion an d operatedthrough an opening of less size than the head of said screw, asdescribed.

In witness whereof I have hereunto set my hand and seal.

ELLTAH KNAPP. lL. s] Witnesses:

' C. W. M. SMITH,

WILLIAM H. STERLING.

